The back garden of our house contains a lawn ，（） very pleasant to sit on in summer.
A、whichisA
「句意」我家的后花園有一片草坪，夏天坐在上面會令你心曠神怡。
「難點(diǎn)」which引出非限制性定語從句，在句中作主語，且和siton構(gòu)成賓關(guān)系。類似的句子有：Thisroomiscomfortabletolivein這句中l(wèi)ivein和thisroom構(gòu)成動賓關(guān)系。
Wecanhear（）fromthebackoftheroom.
_____atinthisway,thesituationdoesn’tseemsodesperate.
ProfessorJohnsonissaid_____somesignificantadvanceinhisresearchinthepastyears.
Underthis____pressuresomeoftherocksevenbecameliquid.
Thebackgardenofourhousecontainsalawn，____verypleasanttositoninsummer.
